CN106963520B - Acetabulum outer cup - Google Patents

Abstract

The invention discloses an acetabular outer cup. The acetabular outer cup includes a cup body and a valgus rim, the cup body has an open end, and a fixing hole for installing a fixing nail is arranged on the cup body; the valgus rim extends from the open end toward the direction away from the cup body, and the valgus rim includes The first eversion portion and the second eversion portion are spaced apart from each other, and the first eversion portion and the second eversion portion are respectively provided with fixing holes for installing the fixing nails, and the first eversion portion is formed by the opening of the cup body. The first side edge of the end extends in the direction away from the cup body, and is fixedly matched with the upper edge of the acetabulum; the second valgus portion is extended from the second side edge of the open end of the cup body in the direction away from the cup body, so as to be fixedly matched with the ischium , the first side edge is disposed away from the second side edge. The acetabular outer cup can be connected to the bone around the acetabular fossa by fixing screws, so as to maintain the gap between the acetabular outer cup and the acetabular fossa even if the defect of the upper edge of the acetabulum is more serious or the bone defect is more serious connection stability.

Description

acetabular cup

technical field

The invention relates to the technical field of hip joint revision, in particular to an acetabular outer cup used in hip joint revision surgery.

Background technique

After hip replacement, patients may experience loss of joint function or pain due to many reasons (aseptic loosening, joint instability, osteolysis, infection, periprosthetic fractures, etc.), and usually require hip revision surgery. Restoring limbs, balancing muscle groups, and restoring joint and prosthesis stability. The classification of acetabular bone defects mainly includes AAOS classification, Paprosky classification, Gustilo classification and Gross classification. Among them, Paprosky classification evaluates the degree of hip center displacement and internal displacement, tear drop destruction and ischial osteolysis. to confirm. Under normal circumstances, when the bone defect is not serious, a revision outer cup with a larger diameter than the original implanted outer cup can usually be used to achieve firm initial stability. However, if the bone defect is serious, compression bone grafting may be required. That is, the defect area is filled with autologous or allogeneic cancellous bone particles, and the acetabular reamer is reversed for compaction, and then a large-diameter acetabular prosthesis is implanted. If there are many defects in the upper edge of the acetabulum, it is necessary to insert a reinforcing block or a reinforcing ring after bone grafting.

Due to the above factors, the stability of the acetabular cup in the prior art is generally poor.

The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention.

SUMMARY OF THE INVENTION

A main purpose of the present invention is to overcome at least one of the above-mentioned defects of the prior art, and to provide an acetabular outer cup, so as to improve the stability of the connection between the acetabular outer cup and the acetabular fossa.

For realizing the above-mentioned purpose of the invention, the present invention adopts following technical scheme:

According to one aspect of the present invention, there is provided an acetabular cup, wherein the acetabular cup comprises a spherical cup body and a valgus rim, the cup body has an open end, and a useful a fixing hole for installing a fixing nail; the eversion edge extends from the edge of the open end toward the direction away from the cup body; the eversion edge includes a first eversion portion and a second eversion portion spaced apart from each other , the first eversion portion and the second eversion portion are respectively provided with fixing holes for installing the fixing nails; the first eversion portion is formed by the first side edge of the open end of the cup body The second valgus portion extends from the second side edge of the open end of the cup body in the direction away from the cup body, so as to be fixedly matched with the upper edge of the acetabulum. The ischium is fixed and fitted, and the first side edge is disposed away from the second side edge.

According to an embodiment of the present invention, at least one of the fixing holes is an angle adjustment hole, and there is a free rotation gap of a predetermined angle between the inner wall of the angle adjustment hole and the fixing nail, so that the fixing nail can be Different angular positions enter into the angle adjustment holes, and the predetermined angle is 0-40°.

According to an embodiment of the present invention, the fixing nail includes a nail head and a threaded rod fixedly connected with the nail head, and the surface of the side where the nail head is connected with the threaded rod is a spherical surface; the angle adjustment hole It is a spherical hole, the nail head is swingably disposed in the spherical hole, and the spherical surface of the nail head is attached to the inner wall surface of the spherical hole.

According to an embodiment of the present invention, three through holes are provided on the first eversion portion, and two through holes are provided on the second eversion portion.

According to an embodiment of the present invention, the fixing holes on the cup body and the outer rim are both angle adjustment holes.

According to an embodiment of the present invention, a through hole is provided through the axial direction of the fixing nail, and at least a part of the through hole is set as an internal thread hole; the fixing nail further includes a structural reinforcement and a fixing member, the One end of the structural reinforcement is an installation end, and the outer peripheral surface of the installation end is provided with an external thread matching the inner threaded hole of the fixing nail; the end of the structural reinforcement opposite to the installation end can extend to Outside the bone; the fixing member is fixedly mounted on the end of the structural reinforcement member opposite to the mounting end.

According to an embodiment of the present invention, the inner threaded hole is arranged in a tapered manner, gradually shrinking in a direction away from the nail head, and the taper is 2°-3°; a rod wall of the threaded rod is provided with a a slit; the slit is arranged along the axial direction of the threaded rod and penetrates the rod wall in the radial direction, so that the threaded rod is formed into a stretchable structure; the installation of the structural reinforcement The end is a pointed end, and the diameter of the structural reinforcement matches the maximum diameter of the internally threaded hole of the threaded rod.

According to an embodiment of the present invention, wherein the fixing nail further comprises an inner core for installation sleeved in the inner threaded hole, the inner core for installation comprises an inner core head and a fixed connection with the inner core head an insertion part, the insertion part is provided with a taper to match the taper of the inner thread hole of the threaded rod; the inner core head is provided with an outer thread, which is suitable for the inner thread of the nail head Threaded hole for installation.

According to an embodiment of the present invention, a transverse groove is provided on the end surface of the inner core head at one end away from the insertion portion, and an instrument installation groove is provided at the end surface of the nail head away from the threaded rod. .

According to an embodiment of the present invention, wherein the fixing member is a plate-like structure, and the fixing member is fixedly mounted on an end of the structural reinforcement member away from the mounting end.

As can be seen from the above technical solutions, the advantages and positive effects of the acetabular outer cup of the present invention are:

The acetabular outer cup provided by the present invention has a valgus rim, and the valgus rim is provided with a fixing hole for the fixing nail to pass through, and the acetabular outer cup can be connected to the bone around the acetabular fossa through the fixing nail , in order to maintain the stability of the connection between the acetabular outer cup and the acetabular fossa when the defect of the upper edge of the acetabulum is more serious or the bone defect is more serious.

Description of drawings

The various objects, features and advantages of the present invention will become more apparent from consideration of the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the invention and are not necessarily drawn to scale. Throughout the drawings, the same reference numbers refer to the same or like parts. in:

Fig. 1 is a diagram showing a combined state of an acetabular outer cup and an acetabular fossa according to an exemplary embodiment.

FIG. 2 is a structural diagram of the acetabular outer cup in FIG. 1 .

FIG. 3 is a structural diagram of the acetabular outer cup in FIG. 1 .

Fig. 4 is a combined view of a fixation nail and an acetabular outer cup according to an exemplary embodiment.

FIG. 5 is a partial cross-sectional view of the combined view of the fixation pin and the acetabular cup in FIG. 4 .

FIG. 6 is a partial enlarged view of the fixing nail in FIG. 5 .

Among them, the reference numerals are described as follows:

1. Cup body; 2. The first eversion part;

3. The second eversion part; 4. The fixing hole;

6. Fixing nail; 71. Insertion channel;

91. Nail head; 92. Threaded rod;

10. Fixtures; 11. Structural reinforcements;

12. Nuts.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.

Fig. 1 is a diagram showing a combined state of an acetabular outer cup and an acetabular fossa according to an exemplary embodiment. FIG. 2 is a structural diagram of the acetabular outer cup in FIG. 1 . FIG. 3 is a structural diagram of the acetabular outer cup in FIG. 1 .

1 to 3 , according to an aspect of the present invention, an acetabular outer cup is provided, which may include a cup body 1 and a valgus rim. According to a specific embodiment of the present invention, the cup body 1 may be hemispherical, but not limited thereto, and the shape may be selected according to specific installation requirements.

1 and 3, the cup body 1 can be made of metal material, such as titanium alloy; the cup body 1 can be equipped with polyethylene, metal and ceramic linings through different locks and methods, such as snap fit or taper fit , The inner lining can be formed with a hemispherical dimple to accommodate the femoral head. According to a specific embodiment of the present invention, the cup body 1 may have an open end, so that the inner liner can be inserted into the cup body 1 through the open end. In order to further improve the stability of the connection between the acetabular outer cup and the acetabular fossa, according to a specific embodiment of the present invention, the cup body 1 may also be provided with a fixing hole 4 through which the fixing nail 6 can attach the acetabular outer cup to the outer acetabulum. The cup is fixed in the acetabular fossa.

The hemisphere defined in the present invention is used to distinguish a whole sphere, and a hemisphere refers to a non-integral sphere. The whole ball belongs to the hemisphere.

According to a specific embodiment of the present invention, a fixing hole 4 for a fixing nail 6 to pass through can be provided on the valgus edge, and the acetabular outer cup can be connected to the bone around the acetabular fossa through the fixing nail 6, so that the acetabular cup can be connected to the acetabular fossa. In the case of serious defect of the upper edge of the acetabulum or serious bone defect, the connection stability between the acetabular outer cup and the acetabular fossa is still maintained.

1 and 3, according to a specific embodiment of the present invention, the valgus rim can extend from the edge of the open end toward the direction away from the cup body 1, so that the valgus rim can cooperate with the bone around the acetabular fossa. to locate. According to a specific embodiment of the present invention, a fixing hole 4 through which a fixing nail 6 can pass through may be provided on the eversion edge, so as to fix the cup body 1 in the acetabular fossa.

1 and 3, according to an embodiment of the present invention, the eversion edge may include a first eversion portion 2 and a second eversion portion 3 spaced apart from each other, wherein the first eversion portion 2 may be formed by The first side edge of the open end of the cup body 1 extends away from the cup body 1 so as to be able to be fixedly matched with the upper edge of the acetabulum located above the acetabular fossa; the second eversion portion 3 can be along the first side of the open end of the cup body 1 The two side edges extend away from the cup body 1, so as to be fixedly matched with the ischium. According to a specific embodiment of the present invention, the first side edge may be away from the second side edge, for example, but not limited to, the first side edge may be an upper side edge, and the second side edge may be a lower side edge.

1 and 3, according to an embodiment of the present invention, the first eversion portion 2 and/or the second eversion portion 3 may be provided with a plurality of fixing holes 4. The number of the fixing holes 4 on the first eversion portion 2 and the second eversion portion 3 can be set as required. For example, but not limited to, according to a specific embodiment of the present invention, the first eversion portion 2 is provided with The three fixing holes 4 and/or the second eversion portion 3 may be provided with two fixing holes 4 . According to a specific embodiment of the present invention, the fixing holes 4 on the first eversion portion 2 and the second eversion portion 3 may be uniformly arranged.

Orientation terms defined in the present invention, such as "up, down, left, right", etc., are defined according to the orientations in the accompanying drawings. When the illustrations in the accompanying drawings are rotated, the parts defined by the orientations are also defined. Then rotate the corresponding angle.

According to a specific embodiment of the present invention, the fixing hole 4 on the cup body 1 and the valgus edge can be set as an angle adjustment hole, and the inner wall of the fixing hole 4 can have a free rotation gap of a predetermined angle with the fixing nail, so as to make The fixing pegs 6 can enter the fixing holes 4 at different angular positions. According to a specific embodiment of the present invention, the edge of the fixing hole 4 may be provided with a degree of freedom of a predetermined angle, all within the protection scope of the present invention. Since the edge of the fixation hole 4 has the above-mentioned degree of freedom of the predetermined angle, when the acetabular cup is implanted in the total hip replacement surgery, the fixation pin 6 can be implanted in the direction expected by the operator, thereby reducing the occurrence of blood vessels during the operation. The risk of nerve damage, reducing the initial stability of the fixation nail 6 caused by insufficient bone mass in the bone defect. According to a preferred embodiment of the present invention, the above-mentioned predetermined angle may be 0°-40°, but not limited thereto, and the predetermined angle may be adjusted according to actual surgical requirements.

Referring to FIG. 4 , according to an embodiment of the present invention, the fixing nail 6 may be provided with a nail head 91 and a threaded rod 92 fixedly connected with the nail head 91 . According to a specific embodiment of the present invention, the nail head 91 may It is a hemispherical structure, for example, but not limited to, the nail head 91 may have a spherical surface and a flat surface, the surface on the side connected to the threaded rod 92 may be a spherical surface, and the side of the nail head 91 away from the threaded rod 92 may be a flat surface, and the threaded rod 92 is formed by The spherical surface extends away from the nail head 91 . According to an embodiment of the present invention, the extending direction of the threaded rod 92 may be perpendicular to the plane. According to a specific embodiment of the present invention, the fixing hole 4 can be set as an angle adjustment hole, and the angle adjustment hole can also be a hemispherical hole matching the hemispherical surface. The hemispherical surface of the nail head 91 is suitable for fitting with the inner wall surface of the hemispherical hole, so that the fixing nail 6 is inserted into the fixing hole 4 at a required angle. In this way, the fixing nail 6 can be better matched with the fixing hole 4, so that the hemispherical surface of the fixing nail 6 can still be matched with the fixing hole 4 after the fixing nail 6 swings a certain angle in the angle adjustment hole (for example, the fixing hole 4).

4, according to another specific embodiment of the present invention, the fixing hole 4 can also be a multi-angle locking hole of the trauma bone plate, so as to realize multi-angle installation. The multi-angle locking hole can be a threaded hole, and the nail head of the fixing nail 6 matched with the multi-angle locking hole can adopt a tapered design, which gradually shrinks along the insertion direction of the fixing nail 6, and the tapered nail head is provided with an external thread, so that the fixing nail The installation direction of 6 can be adjusted within a certain angle. According to a specific embodiment of the present invention, the lower end of the hemispherical hole may also be provided with an insertion channel 71 , the insertion channel 71 is suitable for the threaded rod 92 to pass through and has a swinging gap with the threaded rod 92 , so that the threaded rod 92 can A suitable angle is swung in the insertion channel 71 .

According to an embodiment of the present invention, the fixation nail 6 may be a bone screw. According to an embodiment of the present invention, the fixation nail 6 may be a cancellous bone screw. According to a specific embodiment of the present invention, the diameter of the bone screw may be 4.5-7.5mm, such as but not limited to 4.5mm, 5mm, 5.5mm, 6mm and the like. According to a specific embodiment of the present invention, the length of the bone screw may be 10-60 mm, such as but not limited to 10 mm, 15 mm, 20 mm or 25 mm. According to a specific embodiment of the present invention, the head of the bone screw may have a hexagonal interface, a plum-blossom interface or other types of interfaces, which are all within the protection scope of the present invention.

The diameter of the outer cup of the acetabulum can be determined according to the actual installation requirements. According to an embodiment of the present invention, its diameter can range from 50 to 70 mm, and can be in increments of 1 mm or 2 mm, all within the protection scope of the present invention. According to an embodiment of the present invention, the acetabular cup may use a titanium spray or double-coat structure. According to a specific embodiment of the present invention, the acetabular outer cup can be used with a polyethylene lining after placing bone cement. In addition, a lock and mechanism can also be used with polyethylene or ceramic linings, or an outer cup can be used at the same time. Matching with different linings (metal, polyethylene, ceramics) is within the protection scope of the present invention. According to an embodiment of the present invention, the inner liner can be used with existing ball heads on the market.

According to a specific embodiment of the present invention, an acetabular outer cup with a larger diameter than the previous outer cup can be selected during revision to cover most of the acetabulum; there are a plurality of fixing holes 4 inside the acetabular outer cup for fixing nails 6. Implanted at different angles and directions to increase the initial stability; the acetabular upper edge and ischial part of the acetabular cup are respectively provided with a first valgus part 2 and a second valgus part 3, and the first valgus part is 2 and the fixing hole 4 of the second valgus part 3 can be set with a fixed nail 6 according to a predetermined angle. According to the needs of the patient, the fixing nail can be screwed into the bone defect at the upper edge of the acetabulum of the acetabular cup after bone grafting. 6. Increase the overall stability of the acetabular cup.

5 and 6, according to a specific embodiment of the present invention, the threaded rod 92 may include an inner threaded hole coaxially disposed with the threaded rod 92, and the inner threaded hole may be disposed through the threaded rod 92, but not limited thereto , according to a specific embodiment of the present invention, a through hole can be provided through the fixing nail 6 in the axial direction, and at least a part of the through hole can be provided with an internal thread to form an internal thread hole. As an optional embodiment, the internal thread hole can be Provided on the nail head and/or on the threaded rod 92 . According to a specific embodiment of the present invention, the fixing nail 6 may further include a structural reinforcement member 11, and the structural reinforcement member 11 may include a rod-shaped structure with a circular cross-section. The threaded rod 92 is securely fastened to the bone. According to a specific embodiment of the present invention, one end of the structural reinforcement member 11 may be the installation end, and the outer peripheral surface of the installation end may be provided with an external thread, which is suitable for being screwed into the above-mentioned internal threaded hole; the end of the structural reinforcement member 11 away from the installation end It can extend out of the bone, and the structural reinforcement 11 can be fixed by the fixing member 10 . That is to say, the threaded rod 92 and the structural reinforcement 11 can be coaxially arranged, and the fixing member 10 and the nail head 91 can be located on two sides of the bone respectively, so that the fixing nail 6 can be stably fixed on the bone.

5 and 6, according to a specific embodiment of the present invention, the fixing member 10 may be configured as a plate-like structure, but not limited thereto, and the specific structural shape of the fixing member 10 may be selected according to actual needs. The connection between the fixing member 10 and the structural reinforcement member 11 may be welding, riveting or screw connection, which are all within the protection scope of the present invention. An optional fixed installation method may include: providing an external thread on the part of the structural reinforcement member 11 extending to the outside of the bone, and providing a through hole matching the structural reinforcement member 11 on the fixing member 10 .

6 , according to a specific embodiment of the present invention, the fixing member 10 may further include a nut 12 matching the external thread of the structural reinforcement member 11 , and the fixing member 10 may be nested in the structural reinforcement member 11 extending to the outside of the bone first. The structural reinforcement 11 further extends to the outside of the fixing member 10, and then the installation nut 12 is screwed into the structural reinforcement 11 to fasten the fixing member 10 between the installation nut 12 and the bone to form a fixed installation (eg 5 and 6). Alternatively, an external thread may be provided on the portion of the structural reinforcement member 11 extending to the outside of the bone, a threaded hole matching the external thread may be provided on the fixing member 10 , and the fixing member 10 may be directly screwed onto the structural reinforcement member 11 . As a further alternative, the fixing member 10 and the structural reinforcement member 11 may be integrally formed, for example, but not limited to, the fixing member 10 and the structural reinforcement member 11 may be welded and fixed.

According to a specific embodiment of the present invention, the length of the threaded rod 92 may be 10-40 mm, and the length of the structural reinforcement 11 by welding and fixing may be 20-80 mm according to individual differences of patients and different insertion positions. The lengths of the threaded rod 92 and the structural reinforcement 11 can be determined according to the preoperative image data before the operation. The threads in the holes are installed and matched, and the end of the structural reinforcing member 11 opposite to the installation end extends to the outside of the bone, and the fixing member 10 is suitable for fitting with the bone surface after installation.

According to a specific embodiment of the present invention, the through hole or the threaded hole in the threaded rod 92 may be provided in a tapered manner, gradually shrinking in the direction away from the nail head 91, and the taper is 1°-3°. According to a specific embodiment of the present invention, at least two slits may be provided on the rod wall of the threaded rod 92, but not limited thereto. According to another specific embodiment of the present invention, four slits may be provided, The rod wall is divided into four parts, and the slits are arranged along the axial direction of the threaded rod 92 and penetrate the rod wall in the radial direction, so that the threaded rod 92 is formed into a stretchable structure. After the structural reinforcement 11 is matched with the threaded rod 92 , the threaded rod 92 can be stretched to form a firm connection with the bone. The end of the installation end of the structural reinforcement 11 may be a tip with a gradually reduced diameter, and the diameter of the structural reinforcement 11 may match the maximum diameter of the through hole in the threaded rod 92 . Through this arrangement, when the structural reinforcement 11 is rotated and inserted into the threaded rod 92, the rod wall can be stretched, so that the rod wall expands outward in the radial direction, improving the expansion and tightening force between the interface with the bone, and optimizing the Stability of screw fixation.

As a preferred embodiment, an installation inner core that can be inserted into the inner threaded hole of the threaded rod 92 is also provided. The installation inner core may include an inner core head and an insertion portion fixedly connected to the head, and the insertion portion may be tapered. , to match the taper of the through hole in the threaded rod 92 . The head of the inner core may be provided with an external thread, which is suitable for cooperating with the internal thread of the through hole in the nail head 91 for installation. The advantage of arranging the installation inner core is that when the threaded rod 92 is installed, since the rod wall of the threaded rod 92 is provided with a slit, it is easy to twist during the screwing process, thereby causing the internal through hole to be deformed and affecting the structural reinforcement 11 plug-in installation. By setting the mounting inner core, in the initial state, the mounting inner core is screwed into the threaded rod 92, and the insertion portion of the mounting inner core is inserted into the through hole of the threaded rod 92 to support the rod wall of the threaded rod 92, thereby preventing screwing deformation occurs during entry.

As a preferred embodiment, the fixing hole 4 can also be set as an angle adjustment hole, that is, a hemispherical hole, and the lower end of the hemispherical hole can be provided with an insertion channel 71 , and the insertion channel 71 is suitable for the threaded rod 92 to pass through and to be connected with the threaded rod 92 . There is a rotation gap between them. The surface on which the nail head 91 fits with the hemispherical hole can also be a hemispherical surface, so that the insertion angle of the fixing nail 6 can be adjusted. Also as a preferred embodiment, the fixing hole 4 of the cup body 1 and the fixing hole 4 of the first eversion portion 2 may be respectively provided with fixing nails 6 with structural reinforcements 11. According to a specific embodiment of the present invention, the cup The upper hemisphere of the body 1 can be provided with the fixing nail 6 with the structural reinforcement 11 , the fixing nail 6 with the structural reinforcement 11 and the fixing nail of the first eversion part 2 on the upper hemisphere of the cup body 1 6 may not be on the same plane. Based on the force of the acetabulum when the acetabulum is matched with the inner lining and the femoral head, this arrangement can further improve the stability of the acetabular outer cup.

A transverse groove may be provided on the end surface of the end of the head of the mounting inner core away from the insertion portion, and an instrument installation groove may be provided on the end surface of the end of the nail head 91 away from the threaded rod 92 . After the fixation nail 6 is fixed to the bone, the tubular instrument is installed on the nail head 91, the end of the tubular instrument is provided with a protrusion, and the protrusion is arranged corresponding to the instrument installation groove, which is suitable for insertion into the instrument installation groove; A channel is provided through the shaft, and the rod-shaped instrument is extended into the channel and interferes with the head of the inner core. , by holding the tubular instrument and rotating the rod-shaped instrument at the same time, the installation inner core and the fixing nail 6 can be rotated relative to each other, so that the installation inner core can be taken out.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the above description, numerous specific details are provided in order to give a thorough understanding of the embodiments of the present invention. However, one skilled in the art will appreciate that the technical solutions of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Claims (9)

1. An acetabular cup, comprising:

the cup body is provided with an opening end, and the cup body is provided with a fixing hole for mounting a fixing nail;

an out-turned brim extending from a rim of the open end in a direction away from the cup body; the outward turning edge comprises a first outward turning part and a second outward turning part which are arranged at intervals, and fixing holes for mounting the fixing nails are respectively arranged on the first outward turning part and the second outward turning part;

wherein the first eversion part extends from a first side edge of the open end of the cup body in a direction away from the cup body so as to be fixedly matched with the upper edge of the acetabulum; the second outward turning part extends from a second side edge of the opening end of the cup body to the direction departing from the cup body so as to be fixedly matched with the ischia, and the first side edge is arranged back to the second side edge;

the fixing nail comprises a nail head and a threaded rod fixedly connected with the nail head, and the threaded rod comprises an internal threaded hole which is coaxial with the threaded rod and penetrates through the threaded rod;

the staple further comprises:

one end of the structural reinforcing part is a mounting end, and an external thread matched with the internal thread hole of the fixing nail is arranged on the outer peripheral surface of the mounting end; an end of the structural reinforcement opposite the mounting end is extendable out of the bone; and

the fixing piece is fixedly arranged on one end, opposite to the installation end, of the structural reinforcing piece, and the fixing piece and the structural reinforcing piece are integrally formed;

wherein, the fixing piece and the nail head are respectively positioned at two sides of the bone so as to stretch and fix the bone and the acetabulum outer cup along the axial direction of the structure reinforcing piece.

2. The acetabular cup of claim 1 wherein at least one of the fixation holes is an angle adjustment hole having a free rotational clearance of a predetermined angle between an inner wall of the angle adjustment hole and the fixation pin to enable the fixation pin to enter the angle adjustment hole at different angular positions, the predetermined angle being 0-40 °.

3. The acetabular cup of claim 2 wherein the surface of the side of the stud to which the threaded stem is attached is spherical;

the angle adjusting hole is a spherical hole, the nail head is arranged in the spherical hole in a swinging mode, and the spherical surface of the nail head is attached to the inner wall surface of the spherical hole.

4. The acetabular cup of claim 3, wherein 3 through-holes are provided in the first eversion and 2 through-holes are provided in the second eversion.

5. The acetabular cup of any one of claims 1-4, wherein the fixation holes in the cup body and the valgus rim are both angle adjustment holes.

6. The acetabular cup according to claim 1 wherein the internally threaded bore is tapered to taper in a direction away from the head, the taper being between 2 ° and 3 °;

a slit is arranged on the rod wall of the threaded rod; the slit is arranged along the axial direction of the threaded rod and penetrates through the rod wall in the radial direction so that the threaded rod is formed into a expandable structure;

the mounting end of the structural reinforcement is pointed, and the diameter of the structural reinforcement is matched with the maximum diameter of the internal threaded hole of the threaded rod.

7. The acetabular outer cup of claim 6, wherein the fixation pin further comprises a mounting inner core sleeved within the internally threaded bore, the mounting inner core comprising an inner core head and an insert fixedly connected to the inner core head, the insert being tapered to match the taper of the internally threaded bore of the threaded stem; the head of the inner core is provided with external threads which are suitable for being matched and installed with the internal thread hole of the nail head.

8. The acetabular cup according to claim 7 wherein a transverse groove is provided in an end surface of the core head distal to the insertion portion and an instrument mounting slot is provided in an end surface of the stud distal to the threaded stem.

9. The acetabular cup of claim 8 wherein the fastener is a plate-like structure, the fastener being fixedly mounted to an end of the structural reinforcement remote from the mounting end.

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